The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2016
Filed:
Dec. 28, 2011
Applicants:
Daniel Richard L. Brown, Mississauga, CA;
Adrian Antipa, Brampton, CA;
Inventors:
Daniel Richard L. Brown, Mississauga, CA;
Adrian Antipa, Brampton, CA;
Assignee:
Certicom Corp., Mississauga ON, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/32 (2006.01); H04L 9/30 (2006.01); G06F 21/72 (2013.01); G06F 21/10 (2013.01); G06F 21/64 (2013.01);
U.S. Cl.
CPC ...
H04L 9/3252 (2013.01); H04L 9/3066 (2013.01); H04L 9/3281 (2013.01); G06F 21/10 (2013.01); G06F 21/64 (2013.01); G06F 21/72 (2013.01);
Abstract
Methods, systems, and computer programs for generating a digital signature are disclosed. In some aspects, a symmetric key is accessed. The symmetric key is based on an ephemeral public key. The ephemeral public key is associated with an ephemeral private key. A ciphertext is generated based on the symmetric key and a message. An input value is obtained based on the ciphertext independent of a hash function. A digital signature is generated from the ephemeral private key, the input value, and a long term private key.